Form 4: Workday Founder David Duffield Executes Stock Sale

Workday co-founder David Duffield sold 107,500 shares of Class A common stock via a pre-arranged Rule 10b5-1 trading plan.

Summary

• David A. Duffield, co-founder and 10% owner of Workday, Inc., converted 107,500 shares of Class B common stock into Class A common stock.
• Following the conversion, the reporting person sold the entire 107,500 shares of Class A common stock in multiple transactions.
• The sales were executed on March 31, 2026, at weighted average prices ranging from $128.0853 to $131.41 per share.
• The transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event; while insider selling can be perceived negatively, the use of a pre-planned 10b5-1 program indicates standard portfolio management rather than a reaction to negative internal information.

Positives

• The transactions were executed under a pre-established Rule 10b5-1 trading plan, which is designed to avoid concerns regarding insider trading by scheduling sales in advance.

Negatives

• The sale represents a reduction in the direct beneficial ownership of the company by a major insider and co-founder.

Risks

• Continued selling by major insiders could potentially exert downward pressure on the stock price or signal a lack of long-term confidence to retail investors.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing, as it is a disclosure of insider transaction activity.

Industry Context

StockSavvy.ai notes that insider selling by founders is a common occurrence for liquidity and diversification purposes and does not necessarily reflect a change in the company's fundamental business outlook.

Comparison to Industry Standards

• The use of a Rule 10b5-1 trading plan is the industry standard for corporate insiders to manage equity holdings while maintaining regulatory compliance.

Stakeholder Impact

• Shareholders should note the reduction in the co-founder's stake, though the volume is consistent with planned liquidity events.

Next Steps

• Continued monitoring of future Form 4 filings to track further insider activity.

Key Dates

Keywords

Workday, WDAY, Insider Trading, Form 4, David Duffield, Stock Sale, Rule 10b5-1